Multitech MT2834ZDX Specifications Page 1

FCC Part 15This equipment has been tested and found to comply with the limits fora Class B digital device, pursuant to Part 15 of the FCC Rules. These

Quick Reference Guide2

Quick Reference Guide92To Download a FileIf you know the file name1. From the Main Menu, type F to access the File Menu, then type D.2. Enter the name

C Warranty, Service, and Technical Support935. Type D and press ENTER. You will see a list of the files you havemarked. Type E if you would like to

Quick Reference Guide94About the Multi-Tech Fax-Back ServiceMulti-Tech's fax-back system provides 24-hour access to sales, market-ing, and techni

MT2834ZDXb Data Rates

1 Introduction3CongratulationsCongratulations on your purchase of the MT2834ZDX fax modem, oneof the finest fax modems available today from one of A

Quick Reference Guide4What Is in My Modem Package?Your MT2834ZDX package has several components. Make sure youhave them all before trying to operate y

2Quick Start

Quick Reference Guide6

2 Quick Start7IntroductionWe know you’re eager to get your Multi-Tech MultiModemZDX fax mo-dem up and running, so we’ll skip the features for now, a

Quick Reference Guide8Safety Warnings•Use this product only with UL- and CUL-listed computers.•To reduce the risk of fire, use only 26 AWG or larger t

2 Quick Start9Step 2: Connect the Modem to Your SystemPlacing the MT2834ZDX in a convenient location, connect it to yourcomputer’s serial port, to t

Quick Reference Guide10RS232 ConnectionPlug one end of the serial cable into the RS232 connector on the mo-dem, and the other end into a serial port c

2 Quick Start11POWER ConnectionPlug the power supply module into an AC power outlet or power strip.Plug the power supply’s cable into the POWER jack

82034908

Quick Reference Guide12Step 3: Install the Modem in WindowsIf you use Windows 95, Windows 98, or Windows NT 4.0, you mustinstall the modem in the oper

2 Quick Start13Removing Your Old Modem from WindowsWhen a new modem replaces another modem, the old modem installa-tion remains in Windows after you

Quick Reference Guide14Step 4: Install and Configure Your SoftwareYou must have communications software installed in your computer touse the MT2834ZDX

2 Quick Start15create a default configuration for a Macintosh computer that turnsoff autoanswer, type AT&F&D0S0=0&W. The new configurati

Quick Reference Guide169. If the software allows you to edit the no-connect messages (NOCARRIER, BUSY, NO ANSWER, NO DIALTONE), make sure thereis no s

2 Quick Start178. Click OK, and then click Dial. You will know you have reached amodem by the harsh sounds of the modem handshake.9. When the BBS we

Quick Reference Guide18Windows Terminal1. Open the Accessories program group and double-click on theTerminal icon.2. Select the Settings menu and make

2 Quick Start1910. Type X and press ENTER to select the Xmodem transfer protocol.11. To begin the download in Terminal, click Transfers, then clickR

Quick Reference Guide20ReferencesThe World Wide Web is an excellent source of information about mo-dems in general and modem installation, configurati

3Features

vQuick Reference GuideModels MT2834ZDX, MT2834ZDXb, MT2834ZDXI, MT2834DXKP/N 82034908 Revision I (3/5/99)Copyright ©1999 by Multi-Tech Systems, Inc.Al

Quick Reference Guide22

3 Features23What Can I Do with My MultiModemZDX?Your MT2834ZDX is the gateway to the exciting world of telecommuni-cations.You can use it to access

Quick Reference Guide24FeaturesThe MT2834ZDX automatically adjusts to line conditions and to thecapabilities of the modem it connects to, resulting in

3 Features25Required EquipmentIn addition to the contents of the MT2834ZDX package, you need thefollowing equipment.ComputerThe MT2834ZDX can be con

Quick Reference Guide26Telephone LineYou must have a telephone line with a jack (connector) that accepts thecable that comes with the MT2834ZDX. If yo

3 Features27ConnectionsAll models connect to your computer (“RS232”), to a telephone line(“LINE”), to a power source (“POWER”), and, optionally, to

Quick Reference Guide28Connecting to the Telephone Line (“LINE”)Plug one end of the cable provided with the MT2834ZDX into the tele-phone jack in your

3 Features29Connecting to Power (“POWER”)Low voltage DC power is supplied to the MT2834ZDX through a modu-lar power supply included with the modem.

Quick Reference Guide30Front PanelFigure 3-2. ZDX front panelThe MT2834ZDX has ten LED indicators on the front panel that indicatestatus, configuratio

3 Features3128 LED to indicate speeds between 16,800 and 26,400 bps (seetable). It lights together with the 96 LED to indicate a speed of12,000 bps.

viQuick Reference GuideChapter 1: IntroductionCongratulations...

Quick Reference Guide32Speed Indicator Blink RatesThe 28 (33), 14, and 96 speed indicators light singly or in combinationto indicate data rates. Data

4AT Commands,S-Registers &Result Codes

Quick Reference Guide34

4 AT Commands, S-Registers, and Result Codes35AT CommandsThis section summarizes your modem’s AT commands. For detailedinformation on the commands,

Quick Reference Guide36Command: &AnAnswerbackValues:n = 0 or 1Default: 0Description: &A0 Disables answerback.&A1 Enables answerback reply

4 AT Commands, S-Registers, and Result Codes37Command: &BSnMaximum Reliable Block SizeValues:n = 0 or 1Default: 1Description: &BS0 Maximum t

Quick Reference Guide38Command: DsDialValues:s = dial string (phone number and dial modifiers)Default: noneDescription: Dial telephone number s, where

4 AT Commands, S-Registers, and Result Codes39Command: %DCnAT Command ControlValues:n = 0 or 1Default: 0Description: %DC0 The modem responds to AT c

Quick Reference Guide40Command: EnEcho Command Mode CharactersValues:n = 0 or 1Default: 1Description: E0 Do not echo keyboard input to the terminal.E1

4 AT Commands, S-Registers, and Result Codes41Command: &EnNon-Error Correction Mode Flow ControlValues:n = 10 or 11Default: 10Description: &

ContentsviiCommunications Software ... 26Connections ...

Quick Reference Guide42Command: %EnEscape Sequence OptionsValues:n = 0–5Defaults: 1 and 4Description: %E0 Modem won’t escape.%E1 +++AT<CR> metho

4 AT Commands, S-Registers, and Result Codes43Command: %FnEcho Canceller Frequency OffsetCompensationValues:n = 0 or 1Default: 0Description: %F0 Dis

Quick Reference Guide44Command: $HnHelp ScreensValues:n = 1, 2, or 3Default: NoneDescription: $H1 Display Help Screen #1.$H2 Display Help Screen #2.$H

4 AT Commands, S-Registers, and Result Codes45L10 List signal to noise ratio information (SNR).L11 List noise information.Note: For L9, L10, and L11

Quick Reference Guide46Command: $MBnModem Baud RateValues:n = speedDefault: 28800 (ZDX) or 33600 (ZDXb)Description: $MB75 Originate call in ITU-T V.23

4 AT Commands, S-Registers, and Result Codes47Command: P Pulse DialValues: n/aDefault: YesDescription: The modem pulse-dials numbers that follow P i

Quick Reference Guide48Command: RnReverse Originate/Answer ModesValues:n = 0 or 1Default: 0Description: R0 Modem will not reverse modes.R1 Modem will

4 AT Commands, S-Registers, and Result Codes49Command: &RN Rate NegotiationValues: n/aDescription: Forces the modem to perform a rate renegotia-

Quick Reference Guide50Command: Sr? Read Register ValueValues:r = S-register numberDefault: NoneDescription: Read value of register Sr and display val

4 AT Commands, S-Registers, and Result Codes51Command: #SyEnter Setup PasswordValues:y= password (6–10 characters)Default: MODEMSETUPDescription: En

viiiQuick Reference GuideCTR21... 81Australian Mode

Quick Reference Guide52Command: UnLoopback Test ModesValues:n = 0, 1, 2, or 3Default: NoneDescription: U0 Enable local nalog loopback originate mode.U

4 AT Commands, S-Registers, and Result Codes53Command: XnResult Codes and Call Progress SelectionValues:n = 0–4Default: 0Description: X0 Basic resul

Quick Reference Guide54Command: Z Modem ResetValues: n/aDescription: Reset modem to default values. Defaults comefrom user NVRAM if &W0 is set, fr

4 AT Commands, S-Registers, and Result Codes55Command: $ Call Card Tone DetectValues: n/aDescription: Placed in dial command, causes modem to waitfo

Quick Reference Guide56S-RegistersCertain modem values, or parameters, are stored in memory locationscalled S-registers. Use the S command to read or

4 AT Commands, S-Registers, and Result Codes57S81 sec. 0–255 2 Sets the length of a pause4–255† 4† caused by a comma charac-4–7‡ 4‡ ter in a dialing

Quick Reference Guide58disconnects. The 0 defaultequals 50 ms.S301 min. 0, 1–255 0 Sets how long the modemwaits after the last characteris received or

4 AT Commands, S-Registers, and Result Codes59Result CodesIn command mode the MT2834ZDX can send responses, or resultcodes, to your computer. Result

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5SolvingProblems

Contentsix

Quick Reference Guide62

5 Solving Problems63IntroductionYour MultiModemZDX modem was thoroughly tested at the factory be-fore it was shipped. If you are unable to make a su

Quick Reference Guide64Make sure the power supply module is firmly connected to the mo-dem and to the wall outlet or power strip.If the power strip is

5 Solving Problems65tialization string includes &F as the first command, to cancel any“leftover’ command that could affect the modem’s operation

Quick Reference Guide66Then select Mouse, COM Ports, and IRQ Status and note theaddresses and IRQs that are in use. If you find an IRQ conflict, notew

5 Solving Problems67The modem might be defective. If you have another Multi-Tech mo-dem, try swapping modems. If the problem goes away, the firstmod

Quick Reference Guide68as an error. Make sure your modem’s square wave ring detection isturned on (&RD1). Check the PBX manual to see if you can c

5 Solving Problems69The Modem Disconnects While OnlineIf you have Call Waiting on the same line as your modem, it caninterrupt your connection each

Quick Reference Guide70The Modem Cannot Connect When AnsweringAutoanswer might be disabled. Turn on autoanswer in your data-comm program or send the c

5 Solving Problems71Data Is Being LostIf you are using data compression and a high speed serial port, setthe serial port baud rate to four times the

xQuick Reference Guide

Quick Reference Guide72At speeds above 2400 bps, the remote modem might not use thesame transmission or error correction standards as your modem.Try c

Appendixes

Quick Reference Guide74

A Regulatory Compliance75Appendix A: Regulatory ComplianceFCC Part 68 Telecom1. This equipment complies with part 68 of the Federal CommunicationsCo

Quick Reference Guide76tice in order for you to make necessary modifications in order to maintainuninterrupted service.7. If trouble is experienced wi

A Regulatory Compliance77Fax Branding StatementThe Telephone Consumer Protection Act of 1991 makes it unlawful for anyperson to use a computer or ot

Quick Reference Guide78Canadian Limitations NoticeNotice: The ringer equivalence number (REN) assigned to each terminaldevice provides an indication o

A Regulatory Compliance79Compliance with BABT RequirementsApproved for connection to telecommunications system specified in the in-structions for us

Quick Reference Guide80European Low Voltage DirectiveWhen correctly installed, the modem will present no hazard to the user.When correctly installed,

A Regulatory Compliance81CTR21*This equipment has been approved by Commission Decision CTR21 forpan-European single terminal connection to the publi

1Introduction

Quick Reference Guide82Call Attempts/RetriesApplications software shall be configured so that no more than 3 attemptsare made to establish a connectio

A Regulatory Compliance83New Zealand Telecom Warning NoticeUse of pulse dialing, when this equipment is connected to the same line asother equipment

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B Technical Specifications85Appendix B: Technical SpecificationsYour MT2834ZDX fax modem meets the following specifications:Model Numbers MT2834ZDX,

Quick Reference Guide86Flow Control XON/XOFF, hardware (RTS/CTS),HP (ENQ/ACK)Intelligent Features Fully AT command compatible,autodial, redial, repeat

B Technical Specifications87Carrier Frequencies Transmit originate: 1200 HzV.22bis/V.22 or Transmit answer: 2400 HzBell 212A Standard Receive origin

Quick Reference Guide88Cables One 14-foot RJ-11 phone cable(USA); country-specific cord for UKand International models; externalpower transformer and

C Warranty, Service, and Technical Support89Appendix C: Warranty, Service, andTechnical SupportLimited WarrantyMulti-Tech Systems, Inc. (MTS) warran

Quick Reference Guide90ServiceIf you are outside the USA, your local distributor of Multi-Tech productsnormally offers the quickest and most economica

C Warranty, Service, and Technical Support91Online Warranty RegistrationIf you have access to the World Wide Web, you can register your Multi-Tech p